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Kei

Kei is a unisex given name: about 35% of people named Kei are men and 65% are women, so a gendered salutation is a coin flip and the neutral form is the safe choice.

Mostly femaleMedium
Male 35%Female 65%
Verdict
Mostly female
Male / female split
35% male / 65% female
Confidence
Medium (8 to 63 weighted country observations)
Most common in
Japan, United States
US births since 1880
492 male / 168 female
Data
nam_dict (GFDL) + US SSA
Updated
2026-09-11

How to address Kei

To address Kei when you do not know their gender, use the full name with no title: "Dear Kei," in English, "Guten Tag Kei," in German. About 35% of people named Kei are men and 65% are women, so a gendered salutation is close to a coin flip, and the neutral form above is the safer choice.

Ready-made greetings in six languages

English

Dear Kei,

German

Guten Tag Kei,

French

Bonjour Kei,

Spanish

Estimado/a Kei:

Chinese

Kei您好：

Japanese

Kei様

English

Hi Kei,

German

Hi Kei,

French

Salut Kei,

Spanish

Hola Kei,

Chinese

Kei你好：

Japanese

Keiさん

Greeting generator

This is a statistical estimate, not a statement about the gender, identity or correct form of address of any particular person.

Country breakdown

Gender of the name Kei by country (nam_dict, 55 country columns)
CountryHow commonUsuallyMale share
Japanuncommonwoman's name25%
United Statesuncommonman's name75%

United States birth data

492 male · 168 female · 660 births recorded

Male 75%Female 25%

Since 1980: 75% male.

Frequently asked questions

Is Kei a male or female name?

Kei is a unisex given name: about 35% of people named Kei are men and 65% are women, so a gendered salutation is a coin flip and the neutral form is the safe choice.

How do I address Kei in an email?

To address Kei when you do not know their gender, use the full name with no title: "Dear Kei," in English, "Guten Tag Kei," in German. About 35% of people named Kei are men and 65% are women, so a gendered salutation is close to a coin flip, and the neutral form above is the safer choice.

Is Kei a unisex name?

Kei is not a unisex name: 35% of people named Kei are men. Kei leans strongly female overall.

Related names

MariFemaleHiroshiMaleKeikoFemaleAkiraUnisexMikaDepends on the countryKenjiMaleMikiDepends on the countryMarikoFemale

Sources

Gender by country: nam_dict, the c't first-names dictionary by Joerg Michael, roughly 44,000 names across 55 countries, licensed GFDL. US frequencies: United States Social Security Administration baby-name data, public domain. Method: how we classify names. Full dataset: data & licences. Data built 2026-09-11.

Cite this page

DearWho, "Is Kei a male or female name?", https://dearwho.vercel.app/name/kei (accessed 2026-09-11). Data: nam_dict (J. Michael, GFDL) and US SSA, built 2026-09-11.

BibTeX
@misc{dearwho_kei,
  title  = {Is Kei a male or female name?},
  author = {{DearWho}},
  year   = {2026},
  url    = {https://dearwho.vercel.app/name/kei},
  note   = {Data: nam_dict (GFDL), US SSA public domain}
}